 .app{
   border: 1px solid black;
   background-color: #eee;
   width: 50%;
   margin-left: 25%;
 }
 .input{
  display: flex;
  align-items: center;
  justify-content: center;
}
.cin_item{
  width: 20%;
  height: 80px;
  font-size: 30px;
  margin-top: 10px;
}
.content{
  display: flex;
  justify-content: center;
}
.content .item{
  width: 60px;
  height: 60px;
  background-color: aqua;
  border: 1px solid black;
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 20px;
}
